[Bazel] Use PACKAGE_VERSION for version string.

This enables "-rc" suffix in release branches.

Author: chapuni

utils/bazel/llvm-project-overlay/clang/BUILD.bazel

@@ -4,10 +4,10 @@
 
 load(
     "//:vars.bzl",
-    "LLVM_VERSION",
     "LLVM_VERSION_MAJOR",
     "LLVM_VERSION_MINOR",
     "LLVM_VERSION_PATCH",
+    "PACKAGE_VERSION",
 )
 load("//:workspace_root.bzl", "workspace_root")
 load("//llvm:binary_alias.bzl", "binary_alias")
@@ -553,12 +553,12 @@ genrule(
         "echo '#define CLANG_VERSION_MAJOR_STRING \"{major}\"' >> $@\n" +
         "echo '#define CLANG_VERSION_MINOR {minor}' >> $@\n" +
         "echo '#define CLANG_VERSION_PATCHLEVEL {patch}' >> $@\n" +
-        "echo '#define CLANG_VERSION_STRING \"{vers}git\"' >> $@\n"
+        "echo '#define CLANG_VERSION_STRING \"{vers}\"' >> $@\n"
     ).format(
         major = LLVM_VERSION_MAJOR,
         minor = LLVM_VERSION_MINOR,
         patch = LLVM_VERSION_PATCH,
-        vers = LLVM_VERSION,
+        vers = PACKAGE_VERSION,
     ),
 )
 

utils/bazel/llvm-project-overlay/llvm/config.bzl

@@ -6,10 +6,10 @@
 
 load(
     "//:vars.bzl",
-    "LLVM_VERSION",
     "LLVM_VERSION_MAJOR",
     "LLVM_VERSION_MINOR",
     "LLVM_VERSION_PATCH",
+    "PACKAGE_VERSION",
 )
 
 def native_arch_defines(arch, triple):
@@ -108,7 +108,7 @@ llvm_config_defines = os_defines + builtin_thread_pointer + select({
     "LLVM_VERSION_MAJOR={}".format(LLVM_VERSION_MAJOR),
     "LLVM_VERSION_MINOR={}".format(LLVM_VERSION_MINOR),
     "LLVM_VERSION_PATCH={}".format(LLVM_VERSION_PATCH),
-    r'LLVM_VERSION_STRING=\"{}git\"'.format(LLVM_VERSION),
+    r'LLVM_VERSION_STRING=\"{}\"'.format(PACKAGE_VERSION),
     # These shouldn't be needed by the C++11 standard, but are for some
     # platforms (e.g. glibc < 2.18. See
     # https://sourceware.org/bugzilla/show_bug.cgi?id=15366). These are also