[analyzer] Bump a few default performance thresholds.

This makes the analyzer around 10% slower by default,
allowing it to find deeper bugs.

Default values for the following -analyzer-config change:
max-nodes: 150000 -> 225000;
max-inlinable-size: 50 -> 100.

rdar://problem/32539666
Differential Revision: https://reviews.llvm.org/D34277

llvm-svn: 305900