msvcp90: Add MSVCP_ prefix on more of the string iterator functions.
msvcp71: Share the string.c implementation with msvcp90.
msvcp71: Share the ios.c implementation with msvcp90.
msvcp71: Share the locale.c implementation with msvcp90.
advapi32: Constify a character string.
krnl386.exe16: Use BOOL type where appropriate.
inetcomm: Constify some character strings.
joy.cpl: Constify some character strings.
mscoree: Constify a character string.
mshtml: Constify a character string.
ntdll: Trace NtFlushInstructionCache on x86_64.
user32: In WINPOS_SysCommandSizeMove(), fix constraining a point to a rect's right and bottom edges.
winemac: When dragging an undecorated window, keep the title bar vertically within the work area.

In particular, keep the title bar from moving behind the menu bar or Dock (when
it's on the bottom).
winemac: When ClipCursor() is called redundantly, don't warp the cursor or discard mouse move events.

Fixes a problem in some games which repeatedly (re)establish the same cursor
clipping rect, making it exceedingly difficult to move the camera with the
mouse.
makedep: Add support for reading source variables directly from the makefile.