- don't use [] for map lookups, it can modify the map
- copy up built-in symbols out of shared symbol table levels before modifying them
- enforce shallow vs. deep TType copies
- combine maxArraySize with the array dimensions vector, encapsulate
- remove chaining of array types
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@22953 e7fa87d3-cd2b-0410-9028-fcbf551c1848