Fix various compilation issues seen with MSVC.

FossilOrigin-Name: d6fa938919dbb3fe73ccdd3cbf0e9264d524ed79125f93f977a7d91c425db821

diff --cc manifest
index 2b24be0d1ea0f5428ec336be4b7685972f48838c,a4d377faba480e80f43a97cdf57777f56b2e2eeb..23c9ad5e3390f1608c914f947001943da0fa7e66
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Add\sthe\ssqlite3_serialize()\sand\ssqlite3_deserialize()\sinterfaces,\senabled\nwhen\sthe\s-DSQLITE_ENABLE_DESERIALIZE\scompile-time\soption\sis\sused.
- D 2018-03-07T13:01:54.138
 -C Another\stweak\sto\sthe\sMSVC\sclean\starget.
 -D 2018-03-07T14:53:36.069
++C Fix\svarious\scompilation\sissues\sseen\swith\sMSVC.
++D 2018-03-07T15:19:22.741
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F Makefile.in 1d5a68043cc4d8a6e45b37e2639b148cdd7973aa75e90ec71e12d55cd95e32c0
@@@ -1710,8 -1710,7 +1710,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P 797e02e0ee703ab0fd53e26ba5c96ac7429b8022522bec201423718d508acf24 fadbc5e23f93bedd705bdc83cd3781b3821a231034bae5b942c94da77227721c
- R 9c6c7f909066e499dd8cfc98440c4493
- T +closed fadbc5e23f93bedd705bdc83cd3781b3821a231034bae5b942c94da77227721c
- U drh
- Z f6ec1840cf83626768a920eb621f59f9
 -P 2d544711c7e9f4c2c3ca7ee7d588948d048da82e63c82f41c999fce947d6661d
++P fc42d31d6fca21abc5377a463ed800e3066b2f3fbd2d85cb486f402d2ae7cb15 493abf10bf7b2ea5a4bc430bec786598776f76985ab2d99c7d5117a9a9ff632c
+ R c3c40587d5d534a8ffacd8dd767d10ed
++T +closed 493abf10bf7b2ea5a4bc430bec786598776f76985ab2d99c7d5117a9a9ff632c
+ U mistachkin
 -Z aac660c249afe01430b67bc20c08481b
++Z e2b35eb80754b116b2f8675d8dc4cf43

diff --cc manifest.uuid
index 7e63a2f17948f02522bc46a25aed059c76861c6f,e2afda9942e817de463efe46f1fb4f892f25f959..64342d3a6e7ce864926f9fe4e41f1d6f527022de
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- fc42d31d6fca21abc5377a463ed800e3066b2f3fbd2d85cb486f402d2ae7cb15
 -493abf10bf7b2ea5a4bc430bec786598776f76985ab2d99c7d5117a9a9ff632c
++d6fa938919dbb3fe73ccdd3cbf0e9264d524ed79125f93f977a7d91c425db821