#39 Updated Brazilian Portuguese documentation

This is a patch for the TexInfo sources of the Brazilian Portuguese documentation, removing the umlaut diacritic, due to the Portuguese Language Orthographic Agreement of 1990.

Patch instructions:
- Unpack the attachment.
- Put the two unpacked files (Change.sh and patches.tgz) in the Maxima source code top-level directory.
- Start a Bourne-compatible shell in the same directory as the downloaded files.
- Source the Change.sh script and run the update function.

[Anonymous]

Brazilian Portuguese documentation patch