Further refinement to the calling convention macros.

FossilOrigin-Name: 45588de385d2a721b3e9f04beb6c7b789dd27d42

diff --cc manifest
index fdc9dbc32a8d9c5ccb73c5dfd5b6fa1d0ed416ab,3a567d4deb50a1d952d6be9fb9fac1a5dda72567..8c17c25796c8ad0568afea5f587035753a7cfce3
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,8 -1,8 +1,8 @@@
- C Undo\ssome\sunhelpful\schanges\sto\sskip-scan\sscoring\sthat\swere\sadded\nby\sthe\scheck-in\s[9e2b2681]\sthat\simproved\sscoring\sof\sindex\sscan.
- D 2016-07-29T01:32:36.387
 -C Add\smacro\snecessary\sfor\sbuilding\sseveral\sextensions\swhen\sthe\s__stdcall\scalling\sconvention\sis\snot\sin\suse.
 -D 2016-07-29T01:31:49.222
++C Further\srefinement\sto\sthe\scalling\sconvention\smacros.
++D 2016-07-29T01:49:36.961
  F Makefile.in 6c20d44f72d4564f11652b26291a214c8367e5db
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
- F Makefile.msc eefec7a26bf73bb04f2241058e23a3ec8a43f656
+ F Makefile.msc 3340e479e5221f06c3d61726f8f7efff885e4233
  F README.md 8ecc12493ff9f820cdea6520a9016001cb2e59b7
  F VERSION cb29eb11e493dd85b3eeec4053c03949bf98478e
  F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
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diff --cc manifest.uuid
index e200b2ca41b87e6d6af84ce0524ed2833e40ca1a,3703d2538c0cdd55744438cfffbdd41f7ccf58df..c200ec2ab61e9d45c00e1440ef1faa1198ca133a
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- c7d51934a4f30d096bb79fc509fc9dd0df5d89a4
 -bc8c9b55ddf5227dc6b2116486f4a19bf54fce2b
++45588de385d2a721b3e9f04beb6c7b789dd27d42