Fix purporse -> purpose. Thanks to Andrew Dudman.

Released .xz spec 1.0.2 due to this fix too.

THANKS

@@ -8,6 +8,7 @@ In alphabetical order:
   - Mark Adler
   - Nelson H. F. Beebe
   - Anders F. Björklund
+  - Andrew Dudman
   - İsmail Dönmez
   - Mike Frysinger
   - Jean-loup Gailly

doc/xz-file-format.txt

@@ -2,7 +2,7 @@
 The .xz File Format
 ===================
 
-Version 1.0.1 (2009-06-01)
+Version 1.0.2 (2009-06-04)
 
 
         0. Preface
@@ -93,6 +93,8 @@ Version 1.0.1 (2009-06-01)
 
         Version   Date          Description
 
+        1.0.2     2009-06-04    Typo fixes in Sections 4 and 5.3.1
+
         1.0.1     2009-06-01    Typo fix in Section 0.3 and minor
                                 clarifications to Sections 2, 2.2,
                                 3.3, 4.4, and 5.3.2
@@ -634,7 +636,7 @@ Version 1.0.1 (2009-06-01)
         ---> | List of Records | Index Padding | CRC32 |
              +=================+===============+-+-+-+-+
 
-        Index serves several purporses. Using it, one can
+        Index serves several purposes. Using it, one can
           - verify that all Blocks in a Stream have been processed;
           - find out the uncompressed size of a Stream; and
           - quickly access the beginning of any Block (random access).
@@ -824,7 +826,7 @@ Version 1.0.1 (2009-06-01)
 
 5.3.1. LZMA2
 
-        LZMA (Lempel-Ziv-Markov chain-Algorithm) is a general-purporse
+        LZMA (Lempel-Ziv-Markov chain-Algorithm) is a general-purpose
         compression algorithm with high compression ratio and fast
         decompression. LZMA is based on LZ77 and range coding
         algorithms.

src/liblzma/liblzma.pc.in

@@ -4,7 +4,7 @@ libdir=@libdir@
 includedir=@includedir@
 
 Name: liblzma
-Description: General purporse data compression library
+Description: General purpose data compression library
 URL: http://tukaani.org/xz/
 Version: @PACKAGE_VERSION@
 Cflags: -I${includedir}

windows/Makefile

@@ -80,7 +80,7 @@ endif
 endif
 
 ifdef DEBUG
-# Use echo since it works for this purporse on both Windows and POSIX.
+# Use echo since it works for this purpose on both Windows and POSIX.
 STRIP := echo Skipping strip
 else
 ALL_CPPFLAGS += -DNDEBUG