fix Issue 13417 - segmentation fault when deduce template type
fix Issue 13424 - Initialization of delegate to do-nothing default causes segfault at runtime
Merge pull request #3950 from 9rnsr/fix13417

[REG2.066] Issue 13417 - segmentation fault when deduce template type
Merge pull request #3951 from 9rnsr/fix13424

[REG2.066] Issue 13424 - Initialization of delegate to do-nothing default causes segfault at runtime
Add manually ported frontend source files to version control
Add settings file and makefile targets to build ddmd
Add generated source to .gitignore
Add magicport source to repo
memory hacking
Remove un-convertable comment
Do not use octal literals in dmd
Do not rely on implicit conversion of int to bool
Do not rely on implicit narrowing integral conversions