Updated to version 3.2.4 for release

Updated version to 2.8.8 for release

Updated stub SDL library to version 3.2.6

(cherry picked from commit 565b7b4)

Updated version to 2.8.6 for release

Updated CHANGES.txt for recent patch notes

Only go into image drag-n-drop mode if we aren't showing files from t…

…he command line

cmake: allow overriding SDLIMAGE_DYNAMIC_<XXX> variables

CFLAGS are assumed to be configured through CMAKE_C_FLAGS

Updated version to 2.8.4 for release

Fixed default arguments not being passed properly

(cherry picked from commit 5826e30)
(cherry picked from commit 004ca45)

Don't use a glob in file list for archives

(This has better reproducibility)