Disable buggy warnings (#65542)

* Rename variable called requires

As this is a keyword in C++20, it should be used
to name a variable.

* Disable dangling reference warning

GCC 13 reports false positives of this warning.

* Disable c++20 compatibility warnings

As suggested by andrei8l

Makefile

@@ -109,7 +109,9 @@ WARNINGS = \
   -Wsuggest-override \
   -Wunused-macros \
   -Wzero-as-null-pointer-constant \
-  -Wno-unknown-warning-option
+  -Wno-unknown-warning-option \
+  -Wno-dangling-reference \
+  -Wno-c++20-compat
 # Uncomment below to disable warnings
 #WARNINGS = -w
 DEBUGSYMS = -g

src/faction_camp.cpp

@@ -2575,8 +2575,8 @@ static int salt_water_pipe_segment_of( const recipe &making );
 int salt_water_pipe_segment_of( const recipe &making )
 {
     int segment_number = -1;
-    const auto &requires = making.blueprint_requires();
-    for( auto const &element : requires ) {
+    const auto &requirements = making.blueprint_requires();
+    for( auto const &element : requirements ) {
         if( element.first.substr( 0, salt_water_pipe_string_base.length() ) == salt_water_pipe_string_base
             &&
             element.first.substr( element.first.length() - salt_water_pipe_string_suffix.length(),