doc: Update for CMake current status
nmosh: Add plugin embedding support
Android: Add SDL RWops wrapper
cmake: Use ZZNMOSHPLUGIN_EMBED to compute what plugin will be embeded
nmosh: FreeBSD build fix
r7rs-tests: Update
r7rs: Allow SRFI-4 style notation #u8(...) for bytevectors
reader: NumberReader now reads "1e2" as 100.0

FIXME: Ugly.
doc: Note about number reader change
nmosh: Complete plugin removal...
reader: Accept more R7RS syntax

 - #\null and #\escape
 - #true and #false
nmosh: Add tracing dummy prototypes