added public API for combining transformation matrices
tkWinGDIPlusPath.cpp: remove trailing whitespace, tab-to-space

Rationale:
- Trailing whitespace caused tons of false differences at each commit
- Tab usage was VERY inconsistent in the source
pimage: implemented -fillopacity on linux
pimage: implemented -fillOpacity on Windows
implemented gradients with -fillopacity on Windows
demos: added example for pimage -width/-height and -fillopacity
implemented ptext -fontslant {normal|italic|oblique}, -fontweight {normal|bold} on linux
implemented ptext -fontslant and -fontweight on Windows
demos: some files contained old Mac line endings (CR only)
demos: test linear gradient and -fillopacity
ptext: -textanchor: extended with n|w|s|e|nw|ne|sw|se|c
TMP: textanchor demos
implemented pimage -anchor n/e/s/w/ne/nw/se/sw/c
TMP: demos
bugfix on linux: -strokedasharray should use relative to strokewidth
pImage: added tint support (LINUX & WIN): -tintcolor COLOR -tintamount 0.0-1.0

WIN code by Andras Varga
macosx: implemented pimage -fillOpacity 0.0-1.0, -tintcolor COLOR -tintamount 0.0-1.0
demos: fixed demo names (should be unique)
demos: text bold/italic
configure - generated by autoconf 2.6.9