cmd/go: fix tests broken in CL 358539

CL 358539 revised the build-stamp format, and updated the git and hg
tests to match. However, the fossil and bzr tests were missed, and
were not caught on the builders due to the fact that none of the
builder images have the necessary VCS tools installed.

Updates #48802
Updates #49168

Change-Id: I6b9fd0e19b81cb539864c94ab0860f74e7be6748
Reviewed-on: https://go-review.googlesource.com/c/go/+/369743
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

Author: Bryan C. Mills

src/cmd/go/testdata/script/version_buildvcs_bzr.txt

@@ -31,14 +31,15 @@ cd ..
 env PATH=$oldpath
 rm .bzr
 
-# If there is an empty repository in a parent directory, only "uncommitted" is tagged.
+# If there is an empty repository in a parent directory, only "modified" is tagged.
 exec bzr init
 cd a
 go install
 go version -m $GOBIN/a$GOEXE
-! stdout bzrrevision
-! stdout bzrcommittime
-stdout '^\tbuild\tbzruncommitted\ttrue$'
+stdout '^\tbuild\tvcs=bzr$'
+! stdout vcs.revision
+! stdout vcs.time
+stdout '^\tbuild\tvcs.modified=true$'
 cd ..
 
 # Revision and commit time are tagged for repositories with commits.
@@ -47,9 +48,10 @@ exec bzr commit -m 'initial commit'
 cd a
 go install
 go version -m $GOBIN/a$GOEXE
-stdout '^\tbuild\tbzrrevision\t'
-stdout '^\tbuild\tbzrcommittime\t'
-stdout '^\tbuild\tbzruncommitted\tfalse$'
+stdout '^\tbuild\tvcs=bzr$'
+stdout '^\tbuild\tvcs.revision='
+stdout '^\tbuild\tvcs.time='
+stdout '^\tbuild\tvcs.modified=false$'
 rm $GOBIN/a$GOEXE
 
 # Building an earlier commit should still build clean.
@@ -59,29 +61,30 @@ exec bzr commit -m 'add NEWS'
 exec bzr update -r1
 go install
 go version -m $GOBIN/a$GOEXE
-stdout '^\tbuild\tbzrrevision\t'
-stdout '^\tbuild\tbzrcommittime\t'
-stdout '^\tbuild\tbzruncommitted\tfalse$'
+stdout '^\tbuild\tvcs=bzr$'
+stdout '^\tbuild\tvcs.revision='
+stdout '^\tbuild\tvcs.time='
+stdout '^\tbuild\tvcs.modified=false$'
 
 # Building with -buildvcs=false suppresses the info.
 go install -buildvcs=false
 go version -m $GOBIN/a$GOEXE
-! stdout bzrrevision
+! stdout vcs.revision
 rm $GOBIN/a$GOEXE
 
-# An untracked file is shown as uncommitted, even if it isn't part of the build.
+# An untracked file is shown as modified, even if it isn't part of the build.
 cp ../../outside/empty.txt .
 go install
 go version -m $GOBIN/a$GOEXE
-stdout '^\tbuild\tbzruncommitted\ttrue$'
+stdout '^\tbuild\tvcs.modified=true$'
 rm empty.txt
 rm $GOBIN/a$GOEXE
 
-# An edited file is shown as uncommitted, even if it isn't part of the build.
+# An edited file is shown as modified, even if it isn't part of the build.
 cp ../../outside/empty.txt ../README
 go install
 go version -m $GOBIN/a$GOEXE
-stdout '^\tbuild\tbzruncommitted\ttrue$'
+stdout '^\tbuild\tvcs.modified=true$'
 exec bzr revert ../README
 rm $GOBIN/a$GOEXE
 

src/cmd/go/testdata/script/version_buildvcs_fossil.txt

@@ -19,7 +19,7 @@ cd repo/a
 # If there's no local repository, there's no VCS info.
 go install
 go version -m $GOBIN/a$GOEXE
-! stdout fossilrevision
+! stdout vcs.revision
 rm $GOBIN/a$GOEXE
 
 # If there is a repository, but it can't be used for some reason,
@@ -44,30 +44,33 @@ exec fossil commit -m 'initial commit'
 cd a
 go install
 go version -m $GOBIN/a$GOEXE
-stdout '^\tbuild\tfossilrevision\t'
-stdout '^\tbuild\tfossilcommittime\t'
-stdout '^\tbuild\tfossiluncommitted\tfalse$'
+stdout '^\tbuild\tvcs=fossil\n'
+stdout '^\tbuild\tvcs.revision='
+stdout '^\tbuild\tvcs.time='
+stdout '^\tbuild\tvcs.modified=false$'
 rm $GOBIN/a$GOEXE
 
 # Building with -buildvcs=false suppresses the info.
 go install -buildvcs=false
 go version -m $GOBIN/a$GOEXE
-! stdout fossilrevision
+! stdout vcs.revision
 rm $GOBIN/a$GOEXE
 
-# An untracked file is shown as uncommitted, even if it isn't part of the build.
+# An untracked file is shown as modified, even if it isn't part of the build.
 cp ../../outside/empty.txt .
 go install
 go version -m $GOBIN/a$GOEXE
-stdout '^\tbuild\tfossiluncommitted\ttrue$'
+stdout '^\tbuild\tvcs=fossil\n'
+stdout '^\tbuild\tvcs.modified=true$'
 rm empty.txt
 rm $GOBIN/a$GOEXE
 
-# An edited file is shown as uncommitted, even if it isn't part of the build.
+# An edited file is shown as modified, even if it isn't part of the build.
 cp ../../outside/empty.txt ../README
 go install
 go version -m $GOBIN/a$GOEXE
-stdout '^\tbuild\tfossiluncommitted\ttrue$'
+stdout '^\tbuild\tvcs=fossil\n'
+stdout '^\tbuild\tvcs.modified=true$'
 exec fossil revert ../README
 rm $GOBIN/a$GOEXE