Parse all the C declarations

[ForNeVeR]

We should fully implement the following section of the C standard:

• [ ] 6.7 Declarations
  • [ ] 6.7.1 Storage-class specifiers
  • [ ] 6.7.2 Type specifiers
  • [x] 6.7.3 Type qualifiers
  • [ ] 6.7.4 Function specifiers
  • [ ] 6.7.5 Alignment specifier
  • [ ] 6.7.6 Declarators
  • [x] 6.7.7 Type names
  • [x] 6.7.8 Type definitions
  • [ ] 6.7.9 Type inference
  • [ ] 6.7.10 Initialization
  • [ ] 6.7.11 Static assertions
  • [ ] 6.7.12 Attributes

Look for the number 211 in the code to find clues to resolve this issue.