Patch APR to remove crypt dependency

Motivation:

We dont use any APR features that uses libcrypt so we can safely not link against it. This resolves various issues as some distributions otherwise need the extra installation of libxcrypt-compat etc.

Modifications:

- Add patchfile for APR configure.in to remove linking against libcrypt
- Patch APR during build

Result:

Fixes #703

patches/apr_crypt.patch

@@ -0,0 +1,10 @@
+--- configure.in.old	2023-01-09 14:22:19
++++ configure.in	2023-01-09 14:22:43
+@@ -729,7 +729,6 @@
+       AC_SEARCH_LIBS(gethostbyname, nsl)
+       AC_SEARCH_LIBS(gethostname, nsl)
+       AC_SEARCH_LIBS(socket, socket)
+-      AC_SEARCH_LIBS(crypt, crypt ufc)
+       AC_CHECK_LIB(truerand, main)
+       AC_SEARCH_LIBS(modf, m)
+        ;;

pom.xml

@@ -679,6 +679,10 @@
                           </then>
                         </if>
 
+                        <echo message="Patching APR to not link against libcrypt" />
+                        <patch patchfile="${project.basedir}/../patches/apr_crypt.patch" strip="0" dir="${aprSourceDir}" />
+                        <exec executable="buildconf" failonerror="true" dir="${aprSourceDir}" resolveexecutable="true" />
+
                         <if>
                           <equals arg1="${osxCrossCompile}" arg2="true" />
                           <then>