added non-null protection for gcc and clang
moved parent directory
cleaned up code and added library build
not needed with scons
renamed to 'build'
changed according to std-89 and vector.h changes
added overflow scenario
changed function argument 'index_end' to 'len_set'
updated progress of seg_vector_addset
added to ignore binaries
added to ignore scons file
added to ignore libraries
added to ignore object files
added to ignore executables
added extensions to programs
Merge branch 'master' of http://github.com/taylorholberton/vector