New syntax for complementarity conditions, using the perpendicular symbol

doc/manual/source/conf.py

doc/manual/source/the-model-file.rst

preprocessor

...imulations/initval_endval_blocks/histval_initval_test.mod

...simulations/initval_endval_blocks/initval_endval_test.mod

tests/ep/rbcii_MCP.mod

tests/ep/rs2.mod

tests/lmmcp/MCP_ramsey.mod

tests/lmmcp/SMOPEC.mod

tests/lmmcp/purely_backward.mod

tests/lmmcp/purely_forward.mod

tests/lmmcp/rbcii.mod

tests/lmmcp/sw_lmmcp.mod

tests/path/lcp/mod1.mod