update .gitignore for recent additions

src/.gitignore

@@ -49,6 +49,13 @@
 /pair_meamc.cpp
 /pair_meamc.h
 
+/compute_mliap.cpp
+/compute_mliap.h
+/mliap_*.cpp
+/mliap_*.h
+/pair_mliap.cpp
+/pair_mliap.h
+
 /ptm_*.cpp
 /ptm_*.h
 /compute_ptm.cpp
@@ -305,6 +312,8 @@
 /bond_oxrna2_fene.h
 /bond_quartic.cpp
 /bond_quartic.h
+/bond_special.cpp
+/bond_special.h
 /bond_table.cpp
 /bond_table.h
 /cg_cmm_parms.cpp
@@ -589,6 +598,8 @@
 /fix_meso_move.h
 /fix_meso_stationary.cpp
 /fix_meso_stationary.h
+/fix_momentum_chunk.cpp
+/fix_momentum_chunk.h
 /fix_mscg.cpp
 /fix_mscg.h
 /fix_msst.cpp
@@ -750,6 +761,8 @@
 /fix_wall_piston.h
 /fix_wall_srd.cpp
 /fix_wall_srd.h
+/fix_widom.cpp
+/fix_widom.h
 /gpu_extra.h
 /gridcomm.cpp
 /gridcomm.h