populate library path to gbuildtojson in tests

the test environment clears LD_LIBRARY_PATH as it seems to cause trouble for
make in ASAN. "make gbuildtoide" only runs the gbuildtojson exe, so make sure
it gets the LD_LIBRARY_PATH that was filtered out from the make that starts it.

Change-Id: I69ee0024232092aebcd1e8e11b002d6f7eb55c84
Reviewed-on: https://gerrit.libreoffice.org/30433Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>

solenv/gbuild/extensions/post_GbuildToIde.mk

@@ -23,6 +23,7 @@ foo:
 define gb_LinkTarget__command
 mkdir -p $(WORKDIR)/GbuildToIde/$(dir $(2))
 mkdir -p $(WORKDIR)/LinkTarget/$(dir $(2))
+$(if $(GBUILDTOJSON_LD_LIBRARY_PATH),LD_LIBRARY_PATH=$(GBUILDTOJSON_LD_LIBRARY_PATH)) \
 $(call gb_Executable_get_command,gbuildtojson) \
 --linktarget=$(call var2file,$(shell $(gb_MKTEMP)),100,$(2)) \
 --ilibtarget=$(call var2file,$(shell $(gb_MKTEMP)),100,$(ILIBTARGET)) \

solenv/qa/python/gbuildtoide.py

@@ -28,6 +28,7 @@ def getgbuildtesttools(testcase):
 makeenvvars = ['MAKEOVERRIDES', 'MAKEFLAGS', 'MAKE_TERMERR', 'MAKE_TERMOUT', 'MAKELEVEL', 'MFLAGS']
 def clearmakevars():
     if 'LD_LIBRARY_PATH' in os.environ:
+        os.environ['GBUILDTOJSON_LD_LIBRARY_PATH'] = os.environ['LD_LIBRARY_PATH']
         del(os.environ['LD_LIBRARY_PATH']) # built with ASAN; prevent that
     for makeenvvar in makeenvvars:
         if makeenvvar in os.environ: