Issue #36. RGB Color string parsing.

Ref: https://github.com/Samsung/caskbench/issues/36
tests: No need for static stippled surface

ca_setup_mask() is only called once there's no benefit.  This cleanup
simplifies the code by a few lines.
Merge pull request #66 from Samsung/Issue_36

RGB Color code parsing. 

ref: https://github.com/Samsung/caskbench/issues/36
Merge pull request #74 from Samsung/Issue_69

Update radius properly in animation case.

ref: https://github.com/Samsung/caskbench/issues/69
Issue #72. Added command line option to list the tests available for execution.
Issue #76. Simplify cairo mask case.
Issue #73. Modify the output format for --version option.
Merge pull request #83 from Samsung/Issue_73

Modify the output format for --version option.

ref: https://github.com/Samsung/caskbench/issues/73
Merge pull request #82 from Samsung/Issue_76

Simplify cairo mask case.

https://github.com/Samsung/caskbench/issues/76
Merge pull request #75 from Samsung/Issue_72

Added command line option to display the tests available for execution.

ref: https://github.com/Samsung/caskbench/issues/72
Issue #78. Command line options for listing gles-versions available and to set the gles-version.
Issue #80. Link against X11 libraries by default.
Merge pull request #81 from Samsung/Issue_78

Command line options for listing gles-versions available and to set the gles-version.

ref: https://github.com/Samsung/caskbench/issues/78
Merge pull request #85 from Samsung/Issue_80

Link against X11 libraries by default.

ref: https://github.com/Samsung/caskbench/issues/80
Issue #71. Add command line option to list and choose drawing libraries.
Issue #77. Add ENABLE_CAIRO option to make compilation against Cairo optional.
Proper handling of Image surface in cairo mask case.
Merge pull request #86 from Samsung/Issue_77

Add ENABLE_CAIRO option to permit building caskbench without Cairo support. 

ref: https://github.com/Samsung/caskbench/issues/77
cmake: Display X11 libraries included
Issue #88. Display percentage of improvement for cairo/skia appropriately.