updated CHANGELOG for v1.2.2 (a little late)
removed i=i statements to avoid compiler warning
updates for portability to 'make uninstall'
moved #include "KIM_API_DIRS.h" to KIM_API.cpp
applied patch for memory leak fix provided by Tobias Brink
fixed bugs in kim_api_string_init()
updated CHANGELOG for v1.2.3