Log Message:
felinks: catch up with upstream repo rename. Update to 0.15.1

ELinks 0.15.1
* about:config
* option --always-load-config #137
* compilation fixes on Windows #140
* added ui.background_char #142
* sample build scripts and docker files
* experimental DGI support
* DOS port based on links code
* configurable Accept-Header #143
* minor compilation fixes
ELinks 0.15.0
* Serbian translation update
ELinks 0.15.0rc2
Released on 2021-12-19
* Serbian translation update
* HOME_ETC
ELinks 0.15.0rc1
* removed -Wno-pointer-sign from CFLAGS
* close stdin before calling a background program (sgerwk)
  and options related to it #108, #109, #110, #113
* gemini protocol and text/gemini mime type
* changed rendering of blockquote element
* avoid tmpfile in lua (sgerwk) #115, #118
* console.log in js (mtatton) #93
* localstorage (mtatton) #98
* options document.browse.search.beginning_only
  document.browse.search.ignore_history
  ui.double_esc
* ui.temperature.* to show temperature of CPU
* document.plain.fixup_tables
* enhanced ecmascript code. Added QuickJS
* Notes on ECMAScript:
  requires C++ compiler, sqlite3, libxml++5 >= 5.0.1.GIT
  and either mozjs78-dev or QuickJS-2021-03-27
  Most sites don't work, some crash. Some workarounds were implemented:
  a) ECMAScript is disabled by default
  b) ~/.elinks/allow.txt and ~/.elinks/disallow.txt with url prefixes
  c) Added toggle-ecmascript action. You can bind it to some key
* other small fixes