GHA: self-host tests by default. Skip jq, nasm, xslt, vbs

xslt may never be able to do this but we would definitely like jq, nasm,
and possibly vbs to be fixed for self-hosted tests. Ticket tracking
fixes: #662

.github/workflows/main.yml

@@ -16,7 +16,7 @@ on:
       self-hosted:
         description: 'Include self-hosted tests'
         required: true
-        default: 'no'
+        default: 'yes'
         options: ['yes', 'no']
 
 jobs:

IMPLS.yml

@@ -23,7 +23,7 @@ IMPL:
   - {IMPL: elisp}
   - {IMPL: elixir}
   - {IMPL: elm}
-  - {IMPL: erlang, NO_SELF_HOST: 1}  # step8 OOM
+  - {IMPL: erlang, NO_SELF_HOST: 1}  # step4 silent exit on "(DO 3)"
   - {IMPL: es6}
   - {IMPL: factor}
   - {IMPL: fantom}
@@ -44,7 +44,7 @@ IMPL:
   - {IMPL: janet}
   - {IMPL: java}
   - {IMPL: java-truffle}
-  - {IMPL: jq}
+  - {IMPL: jq, NO_SELF_HOST: 1}  # start-up failure and other issues
   - {IMPL: js}
   - {IMPL: julia}
   - {IMPL: kotlin}
@@ -59,7 +59,7 @@ IMPL:
   - {IMPL: mal, MAL_IMPL: nim-mal, BUILD_IMPL: nim, NO_SELF_HOST: 1, NO_PERF: 1, SLOW: 1}
   - {IMPL: matlab, NO_SELF_HOST_PERF: 1}  # Octave, perf timeout
   - {IMPL: miniMAL, NO_SELF_HOST_PERF: 1, SLOW: 1}  # perf timeout
-  - {IMPL: nasm, NO_SELF_HOST_PERF: 1}  # perf OOM
+  - {IMPL: nasm, NO_SELF_HOST: 1}  # needs memory bump, then fails in step7/quasiquote
   - {IMPL: nim}
   - {IMPL: objpascal}
   - {IMPL: objc}
@@ -111,7 +111,7 @@ IMPL:
   #- {IMPL: wasm, wasm_MODE: warpy,     NO_SELF_HOST_PERF: 1}  # Hangs on GH Actions
   #- {IMPL: wasm, wasm_MODE: wace_libc, NO_SELF_HOST_PERF: 1}  # Hangs on GH Actions
   - {IMPL: wren}
-  - {IMPL: xslt}
+  - {IMPL: xslt, NO_SELF_HOST: 1}  # step1 fail: "Too many nested template ..."
   - {IMPL: yorick}
   - {IMPL: zig}
 
@@ -122,4 +122,4 @@ IMPL:
 # - {IMPL: swift4, NO_DOCKER: 1, OS: xcode10}}
   - {IMPL: swift5, NO_DOCKER: 1, OS: macos}
 
-  - {IMPL: vbs, NO_DOCKER: 1, OS: windows}
+  - {IMPL: vbs, NO_DOCKER: 1, OS: windows, NO_SELF_HOST: 1} # startup invoke failure