Git 2.20.4

1. 80e0385 line-range.c: remove implicit dependency on the_index by Nguyễn Thái Ngọc Duy · 7 years ago
2. 5146f1f line-range.h: drop extern from function declaration by Nguyễn Thái Ngọc Duy · 7 years ago
3. 815834e line-range: teach -L/RE/ to search relative to anchor point by Eric Sunshine · 12 years ago
4. 13b8f68 log -L: :pattern:file syntax to find by funcname by Thomas Rast · 13 years ago
5. 12da1d1 Implement line-history search (git log -L) by Thomas Rast · 13 years ago
6. 25ed341 Refactor parse_loc by Bo Yang · 13 years ago