String literal contains undefined escape sequence.

[Ralf Hildebrandt]

During the build of egcs-1.1b on HP-UX 10.20 (HPPA1.1) using HP's Ansi cc for 
bootstrapping the following warnings are issued:
(srcdir/configure --prefix=/users2/local --enable-shared --with-gnu-as)

cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 72: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 72: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 73: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 74: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 75: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 76: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 77: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 78: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 86: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 87: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 92: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 93: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 102: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 103: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 104: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 105: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 106: warning 31: String literal contains undefined escape sequence.
cc: "/users/gnu/egcs-1.1b/gcc/genopinit.c", line 107: warning 31: String literal contains undefined escape sequence.

-- 
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