Added WIP stuff for the Astaroth DSL compiler rewrite. Once this branch is finished only a single source file will be needed (file ending .ac). This revision is needed to decouple absolutely all implementation-specific stuff (f.ex. AC_dsx) from the core library and make life easier for everyone. The plan is to provide a standard library header written in the DSL containing the derivative operations instead of hardcoding them in the CUDA implementation.

acc/src/acc.l

@@ -22,6 +22,7 @@ L [a-zA-Z_]
 "ScalarArray" { return SCALARARRAY; }
 
 "Kernel"       { return KERNEL; } /* Function specifiers */
+"Device"       { return DEVICE; }
 "Preprocessed" { return PREPROCESSED; }
 
 "const"     { return CONSTANT; }