[csmith-project/csmith] eab897: enforce two generation constrains at command line:

[Xuejun Yang <jxyang@cs.utah.edu>]

  Branch: refs/heads/master
  Home:   https://github.com/csmith-project/csmith

  Commit: eab89765909675a1f05d658878330f6dc10670c6
      https://github.com/csmith-project/csmith/commit/eab89765909675a1f05d658878330f6dc10670c6
  Author: Xuejun Yang <jxyang@cs.utah.edu>
  Date:   2011-07-26 (Tue, 26 Jul 2011)

  Changed paths:
    M src/Block.cpp
  M src/Bookkeeper.cpp
  M src/Bookkeeper.h
  M src/CGContext.cpp
  M src/CGContext.h
  M src/CGOptions.cpp
  M src/CGOptions.h
  M src/Constant.h
  M src/Expression.cpp
  M src/Expression.h
  M src/ExpressionAssign.h
  M src/ExpressionComma.h
  M src/ExpressionFuncall.cpp
  M src/ExpressionFuncall.h
  M src/ExpressionVariable.cpp
  M src/ExpressionVariable.h
  M src/FunctionInvocation.cpp
  M src/FunctionInvocationUser.cpp
  M src/Lhs.h
  M src/RandomProgramGenerator.cpp
  M src/Statement.cpp
  M src/Statement.h
  M src/StatementAssign.cpp
  M src/StatementIf.cpp
  M src/StatementReturn.cpp
  M src/VectorFilter.cpp
  M src/VectorFilter.h

  Log Message:
  -----------
  enforce two generation constrains at command line:

1) expression complexity: configured through "--upper-expr-complexity <num>". It is a soft limit on how many sub-expressions could be there for any expression. Default is 10

2) block depth: configured through "--max-block-depth <num>". It is a hard limit on the nesting level of blocks. Default is 5