[libvector] fix repeated vector_next with tmp_cursor

[cmake] fix make file on mingw on windows

[cmake] support most libxxx with cmake on ubuntu

[cmake] fix issue #99 #100, check mingw on window

[libposix] achieve simple c reflection

Merge pull request #96 from IVOES/fix-bad-strncpy-size

Merge pull request #95 from IVOES/fix-offset-use-before-range-check

Merge pull request #94 from IVOES/fix-missing-check-scanf

Merge pull request #93 from IVOES/fix-badly-bounded-write

Merge pull request #91 from IVOES/fix-unbounded-write

Merge pull request #90 from IVOES/fix-inconsistent-null-check

Use size of destination as third argument of strncpy()

Fix offset used before range check

[librtmpc] Check return value of sscanf()

Fix badly bounded write