SNOW-756 / VWR-23385 FIXED standalone LD_LIBRARY_PATH for unit tests

Used patch from https://jira.secondlife.com/secure/attachment/41586/SNOW-756-standalone_tests.diff

patching file indra/cmake/LLAddBuildTest.cmake
Hunk #1 succeeded at 259 with fuzz 2 (offset 1 line).

Added entry in doc/contributions.txt. No further changes.

originally commited to Snowglobe 2.1 at http://svn.secondlife.com/trac/linden/changeset/3515

doc/contributions.txt

@@ -58,6 +58,7 @@ Aimee Trescothick
 Alejandro Rosenthal
 	VWR-1184
 Aleric Inglewood
+	SNOW-756
 	VWR-10001
 	VWR-10759
 	VWR-10837

indra/cmake/LLAddBuildTest.cmake

@@ -257,7 +257,11 @@ MACRO(SET_TEST_LIST LISTVAR)
     set(${LISTVAR} ${SHARED_LIB_STAGING_DIR}/${CMAKE_CFG_INTDIR}/Resources ${SHARED_LIB_STAGING_DIR}/Release/Resources /usr/lib)
   ELSE(WINDOWS)
     # Linux uses a single staging directory anyway.
-    set(${LISTVAR} ${SHARED_LIB_STAGING_DIR} /usr/lib)
+	IF (STANDALONE)
+      set(${LISTVAR} ${CMAKE_BINARY_DIR}/llcommon /usr/lib /usr/local/lib)
+    ELSE (STANDALONE)
+	  set(${LISTVAR} ${SHARED_LIB_STAGING_DIR} /usr/lib)
+    ENDIF (STANDALONE)
   ENDIF(WINDOWS)
 ENDMACRO(SET_TEST_LIST)