- version bump

- test/plain:

  * added some aggregate-by-val-as-vararg cases
  * made output be more in line w/ sig format

- more signal handling in aggrs tests

- more robust endian detection, on some platforms inclusion of endian…

….h led to assuming wrong endianness (subtle if inclusion was in

- syscall test: added newline to output

- plain_c++ test: removal of double use of va_arg() in same statement…

…, seems to confuse some sparc compilers

- arm32 dyncallback impl: fixed wrong type def

- prep for 1.3 release, version number bump, etc.

- version bump in manual

- changelog update

- added 1.2 release date to changelog