Extend wildcard files section in EditorConfig [ci skip]

Changes:
- Trim trailing whitespace for all files except patches. There isn't
  really any practical reason to not trim the trailing whitespace in all
  other files. Binary files or phpt files that include trailing
  whitespace as part of the test should be manually set in editors/IDEs
  or by disabling the editorconfig for particular editing.
- Add *.ac, *.d, *.l, *.skl, *.re, *.wsdl, *.dtd, *.html, *.rng, *.xml,
  *.xsd, *.xsl, buildconf, and Makefile* files settings.

Closes #4156

.editorconfig

@@ -3,45 +3,32 @@
 root = true
 
 [*]
+trim_trailing_whitespace = true
+insert_final_newline     = true
+end_of_line              = lf
+charset                  = utf-8
 tab_width                = 4
 
-[*.{c,h,y,awk,w32,bat,mk,frag,cpp}]
-charset                  = utf-8
-end_of_line              = lf
+[{*.{awk,bat,c,cpp,d,h,l,mk,re,skl,w32,y},Makefile*}]
 indent_size              = 4
 indent_style             = tab
-trim_trailing_whitespace = true
-insert_final_newline     = true
 
-[*.{php,phpt,inc}]
-charset                  = utf-8
-end_of_line              = lf
+[*.{dtd,html,inc,php,phpt,rng,wsdl,xml,xsd,xsl}]
 indent_size              = 4
 indent_style             = space
-trim_trailing_whitespace = true
-insert_final_newline     = true
 
-[*.{yml,m4,sh}]
-charset                  = utf-8
-end_of_line              = lf
+[*.{ac,m4,sh,yml}]
 indent_size              = 2
 indent_style             = space
-trim_trailing_whitespace = true
-insert_final_newline     = true
 
 [*.md]
-charset                  = utf-8
-end_of_line              = lf
 indent_style             = space
-trim_trailing_whitespace = true
-insert_final_newline     = true
 max_line_length          = 80
 
 [COMMIT_EDITMSG]
-charset                  = utf-8
-end_of_line              = lf
 indent_size              = 4
 indent_style             = space
-trim_trailing_whitespace = true
-insert_final_newline     = true
 max_line_length          = 80
+
+[*.patch]
+trim_trailing_whitespace = false