1. Use Lustre Module in Darshan
2. Integrate DXLT IO tracing code into one module
3. Add hooks in POSIX and MPI Modules
4. Add Intel copyright
Signed-off-by: Cong Xu <cong.xu@intel.com>

also, bug fix to avoid any attempt of reading log file for
modules with no data present in the log

moved the temporary record buffer used in darshan-{convert,parser} into the heap; darshan_diff remains on the stack

mount information is now sorted in order of descending mount
point lengths to fix a bug in matching file names to mount
points. the longest mount point string which matches the file
name is the corresponding mount. this change requires slight
changes to the darshan-logutils API, but does not modify the
log file format

dev-modular should be completely merged into mmap-dev branch