line: removed unused variables
added public API for combining transformation matrices
configure - generated by autoconf 2.6.9
pkgIndex.tcl, symlink to dylib
pimage linux minor optimisation
pimage: print error to stderr when detected an unaccepted pixel format
bugfix on linux: -strokedasharray should use relative to strokewidth
disable error: 'matrix ... is close to singular'
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
ptext: added options: -fontslant {normal|italic|oblique}, -fontweight {normal|bold}
ptext: -textanchor: extended with n|w|s|e|nw|ne|sw|se|c
ptext: added -filloverstroke BOOLEAN option
pimage: added -anchor {n|w|s|e|nw|ne|sw|se|c}
pimage: implemented/added -fillopacity 0.0-1.0 -tintcolor COLOR -tintamount 0.0-1.0 options

WIN codes written by Andras Varga
pimage: added -interpolation {none|fast|best} option
pimage: added -srcregion { x1 y1 x2 y2 } option
pimage: bugfix: bbox was too small
linux: pimage: bugfix: Cairo expects RGB premultiplied by alpha
macosx: fix for fill with gradients and -fillopacity
pline, polyline, path: added/implemented arrowhead options