Update CHANGELOG and configure.ac for the 0.62 release.

sys/{tree,queue}.h are looked up via configure, and therefore are included via that mechanism.

OK stsp

Commands which perform merges will now install bad symlinks as symlinks in the work tree, instead of creating them as regular files. This means bad symlinks committed with 'got commit -S' (or Git) will be preserved. The decision to introduce a bad symlink is done at commit-time and merges should not forcefully reverse this decision. The cherrypick and backout commands require a manual commit step, and a merge result with bad symlinks will require use of 'got commit -S'. Additional testing by thomas adam

This reverts commit c565dfd37a157bab9556aceac96ff27d64525fc9.

Same problem as fixed in 90de04bc7f1b85b9c491bcd124f6178fad005de1. ok stsp

Problem reported and fix tested by Omar Polo.

Update regress/fetch to compile with bloom.

Update portable to support changes for bloom, etc.

Explicitly cast "char" to "unsigned char" when assigned to "int" to prevent sign extension from breaking comparions against EOF or passing invalid arguments to ctype functions.

Our former limit was 128 which is fairly high. Git uses 50 by default. A smaller limit results in slightly larger pack files but makes both packing and unpacking faster.