message: Propagate -DPCRE_STATIC from pcre.BUILD to swig.BUILD
  To fix a build error on Windows:
  ERROR: C:/os/t/external/swig/BUILD.bazel:5:1: Linking of rule '@swig//:swig'
  failed (Exit 1120): link.exe failed: error executing command
  misc.o : error LNK2019: unresolved external symbol __imp_pcre_compile
  referenced in function Swig_string_regex
  ...
diff: @@ -50,12 +50,12 @@ cc_library(
  "-DNEWLINE=10",
  "-DNO_RECURSE",
  "-DPARENS_NEST_LIMIT=50",
  - "-DPCRE_STATIC=1",
  "-DPOSIX_MALLOC_THRESHOLD=10",
  "-DSTDC_HEADERS=1",
  "-DSUPPORT_UCP",
  "-DSUPPORT_UTF",
  ],
  + defines = ["PCRE_STATIC=1"],
  includes = ["."],
  visibility = ["@swig//:__pkg__"], # Please use RE2
  alwayslink = 1,
  