Fixed thr_flags for bcc32

    * templates/bmakecommon.mpt:

Author: jwillemsen

templates/bmakecommon.mpt

@@ -23,6 +23,7 @@ debug_flags = -v -y -Od -vi- -k
 optimize_flags = -O1
 warn_flags = -w-rvl -w-rch -w-ccc -w-obs -w-aus -w-pia -w-inl -w-mls
 cc = bcc32
+thr_flags = -tWM
 binary_flags = -tWR -tWD
 lib_ext = .lib
 common_defines = WIN32 _WINDOWS
@@ -42,7 +43,7 @@ optimize_flags = -O3
 warn_flags =
 cc = bcc32c
 binary_flags = -tR -tD
-thr_flags = -tWM
+thr_flags = -tW
 lib_ext = .lib
 common_defines = WIN32 _WINDOWS
 common_flags = -a8