BIL: Updated to latest BIL spec / functionality

The BIL specification rationalized/added these, with full semantics
	OpTextureQuerySizeLod,
	OpTextureQuerySize,
	OpTextureQueryLod,
	OpTextureQueryLevels, and
	OpTextureQuerySamples.
diff --git a/update_external_sources.sh b/update_external_sources.sh
index dc17621..5474c5d 100755
--- a/update_external_sources.sh
+++ b/update_external_sources.sh
@@ -2,9 +2,9 @@
 # Update source for glslang and LLVM
 # Copy necessary BIL pieces into glslang and LLVM
 
-BIL_REVISION=29091
+BIL_REVISION=29145
 LUNARGLASS_REVISION=1055
-GLSLANG_REVISION=29091
+GLSLANG_REVISION=29145
 
 BUILDDIR=$PWD
 BASEDIR=$BUILDDIR/..