Added #define sp Pike_sp and #define fp Pike_fp

Rev: src/modules/Gmp/mpf.cmod:1.5
Rev: src/modules/Gmp/mpq.cmod:1.6
Rev: src/modules/Gmp/mpz_glue.c:1.104
Rev: src/modules/Image/encodings/xcf.c:1.39
Rev: src/modules/Image/image_module.c:1.13
Rev: src/modules/Mird/mird_glue.c:1.17
Rev: src/modules/Odbc/odbc.c:1.29
Rev: src/modules/PDF/pdf_module.c:1.10
Rev: src/modules/Parser/parser.c:1.13
Rev: src/modules/Ssleay/ssleay.c:1.16
Rev: src/modules/_Charset/charsetmod.c:1.33
Rev: src/modules/_Charset/iso2022.c:1.22
Rev: src/modules/_Image_FreeType/freetype.c:1.6
Rev: src/signal_handler.c:1.223