Sort all includes in src/gromacs

Used:
  admin/reformat_all.sh --pattern=src/gromacs includesort -B=../build
after building the doc-check target (whose dependencies are needed for
the sorter).

Change-Id: Icde0fb5cb5bc082fb4381d4cba1211329bad3fa5
Sort includes outside src/gromacs

Change-Id: I7efefc3835d1a5974886ef680a9fb0ddce11ee3e