implementation.  Patch by Adrian Wielgosik.

This makes Python startup from a virtual environment a little faster.

This makes Python startup from a virtual environment a little faster.

Importing the enum module in the re module slows down Python startup by 34%
when Python is run from a virtual environment, or more generally when the re
module is imported at startup but not the enum module.

Update and augment description of the configuration system.

Patch by Elvis Pranskevichus.

Also update versionadded directive to 3.5.3.

Patch by Jim Fulton.

WARNING: Could not lex literal_block as "c". Highlighting skipped.

Patch by SilentGhost.