Fix include paths for out-of-tree builds
Makefile.am: Fix doxygen invocation in out-of-tree build
Makefile.am: Fix out-of-tree build for C++ and Java bindings
configure.ac: Look for python-2.7.pc as well when making bindings
Makefile.am: Fix out-of-tree build for Python bindings
saleae-logic16: Recognize FPGA FIFO overflow status
unitests: Adapt to recent API changes.
output: Fix output option enumeration.
output: Fix double free.
Close zip file at end of sr_session_file_check.

From patch sent to sigrok-devel by jerryxjtu.